Arrangement for eliminating tobacco wastage in cigar machines



March 2, 1965 A. CARLSON L ARRANGEMENT FOR ELIMINATING TOBACCO WASTAGE mCIGAR NfACHINES 2 Sheets-Sheet 1 Filed Nov. 8, 1962 March 2, 1965 A.CARLSON 3,171,311

ARRANGEMENT FOR ELIIIINATING TOBACCO IAS'I'AGE IN CIGAR IIACHINES FiledNov. 8, 1962 2 Sheets-Sheet 2 IN VEN TOR.

. Ame Car/son ATTORN EYS United States Patent 3,171,311 ARRANGEMENT FORELIMINATING TOBACCO WASTAGE IN CIGAR MACHINES Arne Carlson, Norrviken,Sweden, assignor to Arenco Aktiebolag, Vallingby, Sweden, a joint-stockcompany of Sweden Filed Nov. 8, 1962, Ser. No. 236,258 Claims priority,application Sweden, Nov. 21, 1961, 11,560/ 61 3 Claims. (Cl. 83-98) Thisinvention relates to an arrangement for removing the tobacco waste whichoccurs in cigar machines at the end of a web of tobacco sheet materialwhen cutting wrappers or binders from the web of tobacco. The strip oftobacco is arranged to be fed forward in steps on a cutting bed providedwith perforations, on the underside of which cutting bed there isarranged a chamber connected to a suction pipe and in which a cuttingdie with a width corresponding to the width of the web of tobacco issituated.

An object of the invention is to provide an arrangement of the statedkind which is both simple and reliable and which ensures the removal oftobacco waste even in the event of tobacco waste adhering at some pointto the cut out wrapper or binder or becoming attached to the cutting bedor cutting die. According to the invention this is achieved by thecutting bed with its underlying chamber being divided into two separateparts by the cutting die, a part of the cutting bed lying farther awayin relation to the feeding direction being arranged to be pivotedoutwards from the cutting die to an inclined position and thereafterreturned again to the starting position after every cutting operation bymeans of an actuating mechanism, and by a valve device controlled insynchronism with the pivotal movement being arranged to break off thesuction effect of the suction pipe through the perforations of this partduring at least that portion of the movement when the inclination isgreatest.

During the first part of the pivotal movement the tobacco waste thus issecured to the pivotal part of the cutting bed by the suction action,any tobacco waste being drawn olf. In one particular embodiment of theinvention tobacco waste is removed even when it adheres to the cuttingbed and remains there despite the pivoting of the cutting bed to theinclined position as in this position the chamber is connected to apressure pipe so that eventually adhering tobacco waste is loosened bythe stream of air through the perforations of the cutting bed.

An embodiment of the invention will now be described by Way of examplewith reference to the accompanying drawings, in which:

FIGURE 1 shows a horizontal view of the arrangement,

FIGURE 2 shows a vertical section of the pivotal part of the cutting bedtaken along the line 11-11 in FIG- URE 1', and

FIGURE 3 shows a vertical view of the arrangement, partly in section.

The cutting bed comprises a fixed part consisting of a perforated plate1 and a non-perforated plate 2, and a movable part consisting ofpartially perforated plates 3. The cutting bed encloses a likewiseperforated cutting die 4 which is provided with a knife blade 5corresponding to the contours of the wrapper or binder. On the undersideof the perforated plates 1, 3 and 4 are arranged chambers connected to asuction pipe. The movable part 3 of the cutting bed with its twounderlying chambers 13 is secured to a pivotally mounted shaft 7 in aframe 6. The interior of each of the chambers ice 13 is connected to asuction pipe via an opening 8 between the chambers and a channel 9arranged in the shaft 7. The channel terminates in an opening 14)through the Wall of the shaft where a sleeve 11 is arranged, whichsleeve encloses the shaft and has a passage 12 connected to the suctionpipe. The opening 1! and the passage 12 are located directly in front ofeach other when the movable part 3 of the cutting bed is in its startingposition, FIGURE 2, but in the pivoting of the shaft 7 to theperpendicular or maximally inclined position of the part 3 the opening1% is situated completely to one side of the passage 12, the suctionaction through the perforations of the part 3 thus being interrupted.

The chambers 17 and 18 located on the undersides of the perforatedplates 1 and 4, respectively, are connected to a suction pipe 19 via avalve 20 operated by an actuating mechanism, not shown, adapted toconnect the chambers 17, 18 with the suction pipe 19 during the cuttingoperation and the pivoting operation of the parts 3 for retaining theleading end portion of the web on the plates 1, 4 during theseoperations.

The web 21 of tobacco is wound on a roll 22 and is fed forwards in stepsover the cutting bed in the direction indicated by an arrow in FIGURE 1by means of a web carrier member 23 operated to and fro over the cuttingbed by means of a cam operated fork 24. The end portion of the web 21 isgripped in any suitable, known manner by the carrier member 23 e.g. bysuction action or in the manner disclosed in US. Patent 3,149,767granted September 22, 1964 and moved forward over the cutting bed. Theend of the strip, whose contours correspond to the contours of the frontpart of the knife 5, is placed with its corners on the movable part 3 ofthe cutting bed and with a narrow strip of its middle part on the plate2. The cutting of a wrapper or binder then takes place in the normalmanner, the tobacco sheet being pressed against the knife edge 5 of thecutting die by means of crosswise moving rollers, schematicallyindicated at 25 in FIGURE 3, whereby the end portion on part 3 and plate2 is separated from the cut out wrapper or hinder on the cutting die 4.The shaft 7 is then pivoted by means of an actuating mechanism notshown, which acts together with an arm 14 attached to the shaft 7.During the first portion of the pivoting of part 3 towards the positionof maximum inclination the tobacco waste is secured to the part 3 andthe wrapper or binder is secured to the cutting die 4, because of theaction of the suction pipe through the respective perforations, andportions which happen to adhere because of incomplete cutting are drawnoff. At a predetermined angle of inclination the suction action throughthe perforations of the part 3 is interrupted because of the switchingof the valve device 10, 11, 12 and the tobacco waste slides down or isthrown off from the cutting bed 3.

In order to prevent the tobacco waste from becoming attached to thecutting bed 3 for any reason and following it back to its startingposition, the sleeve 11 can be provided with another passage 15 which isconnected to a pressure pipe and which is arranged to terminate directlyin front of the opening It in the shaft 7 when the cutting bed 3 is inthe position of maximum inclination.

The invention is not limited to the embodiment shown here but can bevaried in several different ways within the scope of the invention. Thusthe movable part 3 can be embodied as a continuous part and include part2. Moreover, the connection of the suction pipe and pressure pipe to themovable part 3 of the cutting bed can be made of flexible tubing withseparately actuated valves synchronised with the pivoting of the part 3.In many cases it can also be advantageous to arranged the pivotal shaftof the part 3 a little below the plane of the cutting bed so thatSimultaneously with the pivotal movement a movement outward from thecutting die 4 is imparted to the part 3.

What is claimed is:

1. In an apparatus for severing wrappers or binders from the leading endportion of a web of tobacco sheet material, the combination comprising afirst perforated plate having a web supporting surface, a secondperforated plate having a web supporting surface spaced from said firstperforated plate, a third perforated plate having a web supportingsurface between said first and second plates, a cutting knifesurrounding said third plate having a contour corresponding to thecontour of said Wrappers or binders, means for moving the leading endportion of the web across said plates to place the ending end edge ofthe web upon said second perforated plate, suction means for retainingthe leading end portion of the web upon said perforated plates, meanscooperating with said knife for cutting the web, means for pivoting saidsecond perforated plate out from said third perforated plate and a valvedevice operated in synchronism with said pivoting means to break off thesuction effect of said second perforate-d plate during at least a partof the pivotal movement.

2. An apparatus as claimed in claim 1, wherein a rotatably mounted shafthaving a channel is provided to which said second perforated plate issecured, said second plate having a chamber secured to the underside ofsaid plate connected to said channel, said shaft having an opening, asleeve connected to suction means enclosing said shaft having a passagethrough the wall thereof located in front of said opening in said shaftwhen said second perforated plate is in its starting position.

3'. An apparatus as claimed in claim 2 wherein said sleeve is providedwith another passage located in front of said opening in said shaftconnected to pressure means when said second perforated plate is ininclined position.

References Cited by the Examiner UNITED STATES PATENTS 977,806 12/10Lacroix 83152 2,538,972 1/51 Magnani 83-24 3,076,366 2/63 Granstedt83510 XR ANDREW R. JUHASZ, Primary Examiner.

DONALD R. SCHRAN, Exmniner.

1. IN AN APPARATUS FOR SERVING WRAPPERS OR BINDERS FROM THE LEADING ENDPORTION OF A WEB OF TOBACCO SHEET MATERIAL, THE COMBINATION COMPRISING AFIRST PERFORATED PLATE HAVING A WEB SUPPORTING SURFACE, A SECONDPERFORATED PLATE HAVING A WEB SUPPORTING SURFACE SPACED FROM SAID FIRSTPERFORATED PLATE, A THIRD PERFORATED PLATE HAVING A WEB SUPPORTINGSURFACE BETWEEN SAID FIRST AND SECOND PLATES, A CUTTING KNIFESURROUNDING SAID THIRD PLATE HAVING A CONTOUR CORRESPONDING TO THECONTOUR OF SAID WRAPPERS OR BINDERS, MEANS FOR MOVING THE LEADING ENDPORTION OF THE WEB ACROSS SAID PLATES TO PLACE THE